<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getGoodsList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getGoodsList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddGoodsPage">添加商品</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table :data="goodslist" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column
          label="商品价格(元)"
          prop="goods_price"
          width="95px"
        ></el-table-column>
        <el-table-column
          label="商品数量"
          prop="goods_number"
          width="95px"
        ></el-table-column>
        <el-table-column
          label="商品重量"
          prop="goods_weight"
          width="70px"
        ></el-table-column>
        <el-table-column label="创建时间" prop="add_time" width="140px">
          <template slot-scope="scope">
            {{ scope.row.add_time | dateFormat }}
          </template></el-table-column
        >
        <el-table-column label="操作" width="130px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="editGoods(scope.row.goods_id)"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="deleteGoods(scope.row.goods_id)"
            ></el-button>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>

    <!-- 修改商品的对话框 -->
    <el-dialog
      title="修改商品信息"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed"
    >
      <el-form
        :model="editGoodsForm"
        :rules="editGoodsFormRules"
        ref="editGoodsFormRef"
        label-width="80px"
      >
        <el-form-item label="商品名称" prop="goods_name">
          <el-input v-model="editGoodsForm.goods_name"></el-input>
        </el-form-item>
        <el-form-item label="商品价格" prop="goods_price">
          <el-input v-model="editGoodsForm.goods_price"></el-input>
        </el-form-item>
        <el-form-item label="商品数量" prop="goods_number">
          <el-input v-model="editGoodsForm.goods_number"></el-input>
        </el-form-item>
        <el-form-item label="商品重量" prop="goods_weight">
          <el-input v-model="editGoodsForm.goods_weight"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editGoodsInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 5
      },
      goodslist: [],
      total: 0,
      // 修改商品dialog
      editDialogVisible: false,
      editGoodsForm: {
        goods_name: '',
        goods_price: 0,
        goods_number: 0,
        goods_weight: 0
      },
      editGoodsFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' }
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' }
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' }
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' }
        ]
      }
    }
  },

  created() {
    this.getGoodsList()
  },

  methods: {
    // 分页页码改变
    handleSizeChange(newPageSize) {
      this.queryInfo.pagesize = newPageSize
      this.getGoodsList()
    },
    // 分页当前页改变
    handleCurrentChange(newPageNum) {
      this.queryInfo.pagenum = newPageNum
      this.getGoodsList()
    },
    // 获取商品列表数据
    async getGoodsList() {
      const { data: res } = await this.$http.get('goods', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg)
      }
      this.goodslist = res.data.goods
      this.total = res.data.total
    },
    // 编辑商品
    async editGoods(id) {
      const { data: res } = await this.$http.get(`goods/${id}`)
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg)
      }
      this.editGoodsForm = res.data
      this.editDialogVisible = true
    },
    // 关闭编辑商品dialog
    editDialogClosed() {
      this.$refs.editGoodsFormRef.resetFields()
    },
    // 确定编辑信息
    editGoodsInfo() {
      this.$refs.editGoodsFormRef.validate(async (valid) => {
        if (!valid) {
          return this.$message.error('编辑失败')
        }
        const { data: res } = await this.$http.put(
          `goods/${this.editGoodsForm.goods_id}`,
          this.editGoodsForm
        )
        if (res.meta.status !== 200) {
          return this.$message.error(res.meta.msg)
        }
        this.editDialogVisible = false
        this.getGoodsList()
      })
    },
    // 删除商品
    async deleteGoods(id) {
      const result = await this.$confirm(
        '此操作将永久删除该商品, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch((err) => err)
      if (result !== 'confirm') {
        return this.$message.info('删除失败')
      }
      const { data: res } = await this.$http.delete(`goods/${id}`)
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg)
      }
      this.$message.success(res.meta.msg)
      this.getGoodsList()
    },
    // 添加商品,跳转到对应页面
    goAddGoodsPage() {
      this.$router.push('/goods/add')
    }
  }
}
</script>
<style lang='less' scoped></style>
